Error E0597

Fix E0597 by ensuring the borrowed value outlives the scope where it is used, typically by moving the variable declaration outside the inner scope or returning the owned value instead of a reference.

fn main() {
    let s = String::from("hello");
    let r = &s;
    println!("{r}");
}

In this corrected example, s is declared in the main scope, so the reference r remains valid until main ends. If you were trying to return a reference to a local variable, change the function to return the owned String instead.

Error E0597 means you are trying to use a piece of data after it has been deleted. Think of it like trying to read a book that you just threw away; the book must exist as long as you are reading it. To fix it, make sure the data you are borrowing lives longer than the code that needs to use it.